package com.atguigu.lease.web.app.service.impl;


import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.common.utils.VerifyCodeUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.mapper.UserInfoMapper;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.SmsService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private SmsService smsService;//发送短信的服务
    @Autowired
    private UserInfoMapper userInfoMapper;
    @Override
    public void getCode(String phone) {

        if (StringUtils.isEmpty(phone)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }
        //验证码的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        //redis中是否已经包含 手机号的key
        Boolean result = redisTemplate.hasKey(key);
        if (result) { // 该手机号发送过短信
            //继续判断是否是在一分钟内发送的信息

            //获取验证码还有多长时间过期
            Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);

            //验证码过期时间(总的时间)
            Integer totalTime = RedisConstant.APP_LOGIN_CODE_TTL_SEC;

            if (totalTime - expire < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC) {
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }

        }


        //生成随机6位的验证码
        String code = VerifyCodeUtil.generateVerifyCode(6);
        //发送手机验证码
        smsService.sendSms(phone, code);

        //redis保存手机号验证码
        redisTemplate.opsForValue().set(key, code, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);

    }

    @Override
    public String login(LoginVo loginVo) {
        String phone = loginVo.getPhone();
        if (!StringUtils.hasText(phone)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        String code = loginVo.getCode();
        if (!StringUtils.hasText(code)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }

        //获取redis中的验证码
        //验证码的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        String redisCode = redisTemplate.opsForValue().get(key);
        if(redisCode==null){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }

        if(!code.equals(redisCode)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }


        //查询phone的用户是不是已经注册为会员
        UserInfo userInfo = userInfoMapper.selectOne(new LambdaQueryWrapper<UserInfo>().eq(UserInfo::getPhone, phone));

        if(userInfo==null){ //不存在直接注册位会员
             userInfo=new UserInfo();
             userInfo.setPhone(phone);
             userInfo.setStatus(BaseStatus.ENABLE);
             userInfo.setNickname("用户-"+phone.substring(6));
             userInfoMapper.insert(userInfo); //mybatusplus 主动返回最新的id值-->赋值给当前被保存的对象的id属性中

        }

        if(userInfo.getStatus()==BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }



        //登录成功,创建token
        String token = JwtUtil.createToken(phone, userInfo.getId());


        return token;
    }
}
